@internxt/scan/tests/eicargen.js

Use Node JS to scan files on your server with ClamAV's clamscan/clamdscan binary or via TCP to a remote server or local UNIX Domain socket. This is especially useful for scanning uploaded files provided by un-trusted sources.

/**
 * This simple script simply allows us to generate an eicar file
 * as opposed to storing one in our repository which could cause
 * it to be immediately removed by antivirus software on contributors'
 * machines or, even worse, flagged by github for hosting a virus.
 *
 * Previously, this library relied on downloading the eircar file from
 * the eicar site but that proved slow and unreliable.
 */
const { writeFileSync, copyFileSync, unlinkSync } = require('fs');
const { Readable } = require('stream');

const goodScanDir = `${__dirname}/good_scan_dir`;
const badScanDir = `${__dirname}/bad_scan_dir`;
const mixedScanDir = `${__dirname}/mixed_scan_dir`;
const badScanFile = `${badScanDir}/bad_file_1.txt`;
const spacedVirusFile = `${badScanDir}/bad  file  1.txt`;

// prettier-ignore
const eicarByteArray = [
    88, 53, 79, 33, 80, 37, 64, 65, 80, 91, 52, 92,
    80, 90, 88, 53, 52, 40, 80, 94, 41, 55, 67, 67,
    41, 55, 125, 36, 69, 73, 67, 65, 82, 45, 83, 84,
    65, 78, 68, 65, 82, 68, 45, 65, 78, 84, 73, 86,
    73, 82, 85, 83, 45, 84, 69, 83, 84, 45, 70, 73,
    76, 69, 33, 36, 72, 43, 72, 42,
];

const eicarBuffer = Buffer.from(eicarByteArray);

const EicarGen = {
    writeFile: () => writeFileSync(badScanFile, eicarBuffer.toString()),
    writeMixed: () => {
        EicarGen.writeFile();
        copyFileSync(`${goodScanDir}/good_file_1.txt`, `${mixedScanDir}/folder1/good_file_1.txt`);
        copyFileSync(`${goodScanDir}/good_file_2.txt`, `${mixedScanDir}/folder2/good_file_2.txt`);
        copyFileSync(badScanFile, `${mixedScanDir}/folder1/bad_file_1.txt`);
        copyFileSync(badScanFile, `${mixedScanDir}/folder2/bad_file_2.txt`);
    },
    emptyMixed: () => {
        unlinkSync(`${mixedScanDir}/folder1/good_file_1.txt`);
        unlinkSync(`${mixedScanDir}/folder2/good_file_2.txt`);
        unlinkSync(`${mixedScanDir}/folder1/bad_file_1.txt`);
        unlinkSync(`${mixedScanDir}/folder2/bad_file_2.txt`);
    },
    getStream: () => Readable.from(eicarBuffer),
    writeFileSpaced: () => writeFileSync(spacedVirusFile, eicarBuffer.toString()),
};

module.exports = EicarGen;